I've heard "(they) look like death warmed over," but never to anyone's face only in reference to them, out of their presence. Is it worse to look like shiitake or death warmed over? *ponders deeply in Rodinesque posture*

I've heard "(they) look like death warmed over," but never to anyone's face only in reference to them, out of their presence. Is it worse to look like shiitake or death warmed over? *ponders deeply in Rodinesque posture*